Pump oiler



Nov. 20, 1945. H. LAINSON ETAL 2,389,518

PUMP OILER Filed June 15, 1944 2 Sheets-Sheet 1 Q kw AN 3 7 MM L 5: L a v Q l a 1 1 1 QN m X m Q r n. m

INVENTORS Patented Nov. 20, 1945 PUMP OILER Hal Lainson and Arthur J. Semotan, Hastings, Nebr., assignors to Dutton-Lainson Company, Hastings, N ebr., a corporation of Nebraska Application June 15, 1944, Serial No. 540,442

7 Claims.

Our invention relates to a pump oiler of the kind used with oil cans.

It is particularly directed toward providing a pump with a small number of simple parts so made and adapted to interfit with each other that they may be quickly and easily assembled on a support, such as the can top, to form a unit carried by the support and movable with it.

One purpose of our invention is to provide an arrangement in which the spout forms a piston rod arranged for convenient assembly with the other parts.

The present invention embodies part of that of the Jaden Patent No. 1,698,632 and in certain phases in an improvement thereover.

Other objects and features will appear as the description proceeds.

Illustrative of our invention are the accompanying drawings, in which:

Figure 1 illustrates in side elevation a can equipped with a pump oiler embodying our invention, parts being broken.

Figure 2 is a vertical sectional view of the pump mechanism of Figure 1.

Figure S is a side elevation of a can equipped with a modified form of pump oiler, and

Figure 4 is a vertical sectional view of the pump mechanism of Figure 3.

In the drawings herewith we have used the numeral H] to indicate an oil can. This can may of course vary considerably in size, depending upon the use in which the oiler is to be put. it has an upwardly extending neck I I on which is screwed a top or cap 12. This top or cap I2 is of the kind having a fiat annular disc l3 with a down-turned annular peripheral flange I4.

The parts of our improved pumping mechanism are so made that they can be assembled on the can top 12 as a support. The cap and the pumping mechanism then form a complete unit that can be removed from the can by simply unscrewing the cap.

In Figures 1 and 2 we have shown one form in which our invention may be embodied, and in Figures 3 and 4 we have illustrated a somewhat diiierent form.

The disc portion I3 of the can top l2 forms the support for the pumping mechanism and is provided with a hole l5, preferably in the middle.

I Pump mechanisms Figures 1 and 2 We refer now to the form of invention illustrated in Figures 1 and 2.

The pump mechanism includes the cylinder l6 having the closed lower end I! and the open upper end. A tubular housing I3 is extended through the hole l5 and has a threaded connection as at l'lwith the upper open end of the cylinder is just below the support formed by the can top or cap l2.

The housing I8 has at its upper end an enlarged flange or head 23. Between the head 23 and the disc portion l3 of the cap I2 is a washer 2|. Between the upper end of the cylinder [3 and the underside of the disc portion I3 is a fiber washer or gasket 22. This gasket 22 helps to form a tight joint between the pump mechanism and the supporting disc member I3. It preferably extends out to the threaded flange l4 so that when the neck of the can I0 is screwed into the cap [2, the gasket 22 helps to form a tight joint between the can and its cap. Thus the cylinder [6 and housing I8 serve to grip and hold the gasket 22 in place and cooperate with it to make a tight joint, and it also affords means for providing a tight joint between the cap and the can.

Secured to the bottom II of the cylinder l6 and communicating with the interior of the cylinder is a piece of tubing 23 intended to extend practically to the bottom of the can [3. The upper end of the tubing 23 is reamed out as at 24 to provide a seat 25 for a ball check valve 26, which is held against accidental removal by inturned fingers 21 at the upper end of the tubing 23.

Slidably extended through the housing I8 is a piston rod 28 having a reduced lower end 29 screwed into the bore 33 extending through the piston 3| in the cylinder [6. The lower end of the bore 30 is reduced as at 32 to form a seat for a ball check valve 33. The valve 33 is yieldably held seated by the spring 34 in the bore 30 between the ball and the lower end of the reduced portion 29 of the piston rod 28.

Extending upwardly from the head 25 of the housing I8 is a tubular sleeve extension 36. Surrounding the sleeve 36 and resting on the head 20 is a compression coil spring 31 which projects substantially above the sleeve 36 and has its upper end received in a cup on the piston rod 28.

Screwed to the upper end of the piston rod 28 above the cup 38 is the spout section 39. The piston rod 28 and its reduced end 29 are provided with a continuous bore 49 communicating with the bore 30 in the piston 3| and with the interior of the spout section 39. It thus appears that the piston rod 28 forms a part of the spout of the oil can and is rigidly connected with the spout portion 39 and has limited sliding connection with the cap top I2 and the can l0.

The lower end of the tubular housing 18 limits the movement of the piston 3| in one direction and the bottom I! or sleeve 36 and cap 38 limit movement in the other direction. The spring 31 is held under tension between the cup 38 and the head 20.

The cup 38 may be provided with a pair of opposite extensions 42 adapted to be engaged by the fingers of the holder which hold the can ID, for operating the pump. It will be understood however that the pump in the form shown in Figures 1 and 2 may be operated by the same sort of mechanism as that illustrated for the pump in Figures 3 and 4.

Operation of pump of Figuresl and 2 The can is grasped in the hand with the forefinger and middle finger extending over the extensions 42. The spout member 39 is placed with its delivery end at the point where the oil is wanted, and the pump is then operated. It is found that in actual practice the tip of the spout can be easily kept wherever it is wanted.

The cylinder [6 has a vent 16a near its upper end.

Numerous advantages in the structure heretofore described already have been noted. The simplicity of the parts makes for economy in manufacture and assembly. All of the pumping mechanism is easily mounted on the can top. Only one hole need be provided in the can top. Unscrewing the tubular housing I8 from the cylinder l6 makes it possible for the removal of the entire pumping assembly from the can top and makes all of the pump assembly parts readily accessible for purposes of replacement, repair or cleaning.

Assuming that the tubing 23 has been connected to the cylinder l6 and that the ball valve 26 is in place, then the entire job of assembling the pumping mechanism can be completed by threading the parts together without the use of any special tools or equipment.

Pumping mechanism of Figures 3 and 4 The pumping mechanism of Figures 3 and 4 has most of its parts like those of Figures 1 and 2. It has a difierent tubular housing indicated by the numeral 50. Instead of having the tubular extension 36, it has a recess 52 formed in its upper end to receive thecompression spring 31. Instead of the cup 38 we. use a cap 54 extending down over the spring 3'! and slidably received in the recess 52 as shown. The spring 31 is thus entirely housed and protected. We may not use the washer 2| in the form now under consideration and we provide a difierent means for operating the pump.

A handle bracket 55 has a hole 56. The bracket 55 rests on the top of the cap l2 and the tubular housing 50 is extended through the hole 55. Thus when the housing 50 is screwed. into the cylinder l6, the bracket 55 is clamped in place. An operating handle 56a has a loose pivotal connection with the upper end of the cap 54 and has a downturned portion 56b which has a pivotal connection with the bracket 55 as at 57.

On the can Hi is an ordinary handle 58 and the handle 560. has a thumb piece 60 arranged to be manipulated by the thumb of the hand which grasps the handle 58.

Thus in the form of the pump mechanism shown in Figures 4 and the parts-afford full enclosure for the spring 31., The housing 50 clamps the handlebracket 55 to the cap top 12 and the bracket 55 afiords a simple pivotal connection for the handle 56a.

Obvious changes may be made in the details of the structure and modifications are possible. It is our purpose to cover by our claims any such changes or modifications which may come within their reasonable scope and within the scope of our invention.

We claim as our invention:

1. In an oiler f the kind described, a support in the form of a can top having an annular peripheral flange and an opening, a tubular housing extended through the opening and having a head on one side of the support, a cylinder on the other side of the support connected to said housing to grip the support between the housing and the cylinder, a gasket between the cylinder and the support to make a tight joint at the opening, and a tight joint where the support engages the can, a valve-controlled means for supplying oil to the cylinder, a piston in the cylinder having a valve, a piston rod extending from the piston through the housing, forming part of a spout, spring means for holding the piston at one limit of its movement, which limit is determined by the housing, a. cap for the spring means, said cap and housing having telescopic relation for enclosing the spring means, means for actuating the piston and piston rod against the tension of such spring means, said piston actuating means including a handle connected to the piston rod, and a bracket having a pivotal connection with the handle, said bracket having a portion gripped by the housing against the support.

2. In an oiler of the kind described, a support having an opening, a tubular housing extended through the opening and having a head on one side of the support, a cylinder on the other side of the support connected to said housing togrip the support between the housing and the cylinder, a piston in the cylinder, a piston rod extendmg ing part of a spout, spring means for holding the piston at one limit of its movement, which limit is determined by the housing, a cap for the spring means, said cap and housing having telescopic relation for enclosing the spring means, means for actuating the piston and piston rod against the tension of such spring means, said piston actuating means including a handle connected to the piston rod, and a bracket having a pivotal connection with the handle, said bracket having a portion gripped by the housing against the support.

3. In an oiler of the kind described, a support having an opening, a tubular housing extended through the opening and having a head on one side of the support, a cylinder on the other side of the support connected to said housing to grip the support between the housing and the cylinder, a piston in the cylinder, a piston rod extending from the piston through the housing forming part of a spout, spring means for holding the piston at one limit of its movement, which limit is determined by the housing, a cap for the spring means, said cap and housing having telescopic relation for enclosing the spring means, and means for actuating the piston and piston rod against the tension of such spring means.

4. In an oiler of the kind described, a support having an opening, a tubular housing extended through the opening and having a head on one from the piston through the housing, formof the support, a cylinder on the other side of the support connected to said housing to grip the support between the housing and the cylinder, a piston in the cylinder, a piston rod extending from the piston through the housing, spring means for holding the piston at one limit of its movement, which limit is determined by the housing, means for actuating the piston and piston rod against the tension of such spring means, said piston actuating means including a handle connected to the piston rod, and a bracket having a pivotal connection with the handle, said bracket having a portion gripped by the housing against the support.

5. In an oiler-of the kind described, a can, a support in the form of a can top having an annular peripheral flange for engagement with the can and an opening, a tubular housing extended through the opening and having a head on one side of the support, a cylinder on the other side of the support connected to said housing to grip the support between the housing and the cylinder, a gasket between the cylinder and the support to make a tight joint at the opening, and a tight joint where the support engages the can, a valve-controlled means for supplying oil to the cylinder, a piston in the cylinder having a valve, and a piston rod extending from the piston through the housing.

6. In an oiler of the kind described, a support having an opening, a tubular housing extended through the opening and having a head on one side of the support, a cylinder on the other side of the support connected to said housing to grip the support between the housing and the cylinder, a piston in the cylinder, a piston rod extending from the piston through the housing, forming part of a spout, spring means for holding the piston at one limit of its movement, means for actuating the piston and piston rod against the tension of such spring means, said piston actuating means including a handle connected to the piston rod, and a bracket having a pivotal connection with the handle, said bracket having.

a portion gripped by the housing against the support.

7. In an oiler of the kind described, a can, a support in the form of a can top having an annular flange for engagement with the can, and having an opening, a tubular housing engaging the top of the support and having a part projecting through the opening, a cylinder on the underside of the support connected to the housing to grip the support between the cylinder and the housing, a gasket between the cylinder and the support to form a tight. joint at the opening and projecting toward the flange to form a tight joint between the can and the support, and pumping mechanism for forcing oil or the like through the 

